CN1942527A

CN1942527A - Biodegradable resin composition

Info

Publication number: CN1942527A
Application number: CNA2005800113920A
Authority: CN
Inventors: 武中晃; 野本昌吾
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2004-05-11
Filing date: 2005-05-10
Publication date: 2007-04-04
Anticipated expiration: 2025-05-10
Also published as: US20080262150A1; KR20070007281A; EP1746136A4; EP1746136B1; KR101150085B1; WO2005108501A1; CN1942527B; EP1746136A1; US7652085B2

Abstract

A process for the production of biodegradable resin compositions which comprises the step (1) of mixing a biodegradable resin with a plasticizer and a nucleating agent consisting of an aliphatic compound having at least one kind of two or more groups selected from among ester, hydroxyl, and amido at a temperature of the melting point (Tm) of the biodegradable resin or above and the step (2) of heat-treating the obtained mixture at a temperature of the grass transition temperature (Tg) of the biodegradable resin composition or above but below Tm; and a biodegradable resin composition comprising a biodegradable resin, a plasticizer, and a nucleating agent as described above, which satisfies the requirements of haze value of 20% or below as determined after heat treatment at 60 DEG C for 36 or 60 hours and in a thickness of 0.5 mm, storage elastic modulus (E') of 1 x 10<8> to 2 x 10<9>Pa at 25 DEG C and a frequency of 50Hz, and storage elastic modulus (E') of 1 x 10<7> to 1 x 10<9>Pa at 60 DEG C and a frequency of 50Hz.

Description

Biodegradable resin composition

Technical field

The present invention relates to Biodegradable resin composition and manufacture method thereof.

Background technology

With oil such as polyethylene, polypropylene, polyvinyl chloride, polystyrene as the common resins of raw material owing to its light weight, have character such as good processibility, rerum natura and persistence and be used in the various fields such as sundry goods, household appliances, auto parts, material of construction or food product pack.But these rosin productss still have good persistence then to become shortcoming in the back depleted stage that plays a role, and are poor in the degradation property of occurring in nature, therefore may exert an influence to the ecosystem.

In order to address this is that, as being thermoplastic resin and polymkeric substance with biological degradability, developed poly(lactic acid) and lactic acid and other aliphatic hydroxyl carboxylic acid multipolymer, derive and the aliphatic polyester that comes and contain Biodegradable polyester resin such as these unitary multipolymers by aliphatic polyol and aliphatics polycarboxylic acid.

These Biodegradable polymers in being placed on soil, seawater or in the animal body etc. in the time, the effect of the enzyme by the microorganisms that exists at occurring in nature begins degraded in several weeks, disappeared between the several years at about 1 year.And degradation product becomes harmless lactic acid, carbonic acid gas, water etc.Even if in aliphatic polyester, because polylactic acid resin is also made L-lactic acid by the sugar that obtains by fermentation method in large quantities from corn, potato etc., cost is cheap, and raw material is the nature farm crop, therefore total carbonoxide burst size is few, and the resulting polymers performance has, and rigidity is strong, the good feature of the transparency, therefore its utilization of expectation at present is used in flat yarn (flatyarn), net, gardening material, grows seedlings with in agriculture engineering materials field, window envelope, shopping bag, compost bag, stationery, the groceries etc. such as basin.But its present situation is, when being poly(lactic acid) because crisp, hard, lack flexual characteristic, all be limited to hard molding field, when being configured as film etc., problem such as have the flexibility deficiency, turn white when crooked can not be used for soft or the semi-rigid field.As the technology of in soft, semi-rigid field, using, the various schemes of softening agent have been proposed to add.For example, the technology of adding softening agent such as Tributyl O-acetylcitrate, triglycerin tetraacetate is disclosed.These softening agent are added in the poly(lactic acid), when being configured as film or sheet material by extrusion molding etc., can obtain good flexibility, but because this polymkeric substance is a non-crystalline state, thermotolerance was insufficient when the flexibility that is therefore caused by near the temperature variation the second-order transition temperature was changed significantly (temperature sensibility), high temperature, thus exist rerum natura along with different noticeable changes in season, under hot environment out of use problem.In order to address this problem, proposed by adding talcum etc. (JP-B3410075) thus the nucleus agent makes the poly(lactic acid) crystallization improve the method for thermotolerance etc.

In addition, the manufacture method that has the transparency and crystalline aliphatic polyester molding concurrently is disclosed in JP-B 3411168, it is characterized in that being shaped and contain the aliphatic polyester composition that fusing point is 40～300 ℃ transparent nucleaters such as aliphatic carboxylic acid amide, when being shaped or after being shaped, heat-treat.

And, in WO-A 2003/042302, disclose and contained amides, softening agent, the lactide acid polymer composition of lactide acid polymer and the manufacture method of molding thereof with ad hoc structure.

Summary of the invention

The invention provides a kind of manufacture method of Biodegradable resin composition, this method comprises following operation: (1) with Biodegradable resin, softening agent and nucleus agent blended operation under more than or equal to the temperature of the fusing point (Tm) of this Biodegradable resin, wherein said nucleus agent is to have the fatty compounds that is selected from least a group in ester group, hydroxyl and the amide group more than 2 in molecule; (2) operation of heat-treating under more than or equal to the second-order transition temperature (Tg) of Biodegradable resin composition and temperature less than Tm.

In addition, the present invention also provides a kind of Biodegradable resin composition, it contains Biodegradable resin, softening agent and nucleus agent, described nucleus agent is to have the fatty compounds that is selected from least a group in ester group, hydroxyl and the amide group more than 2 in molecule, and described composition satisfies following (i), (ii) and the condition (iii)

(i) haze value when the thickness of 60 ℃ of following thermal treatments after 36 hours or 60 hours is 0.5mm is smaller or equal to 20%;

Be 25 ℃ (ii) in temperature, the storage modulus when frequency is 50Hz (E ') is 1 * 10 ⁸～2 * 10 ⁹Pa;

Be 60 ℃ (iii) in temperature, the storage modulus when frequency is 50Hz (E ') is 1 * 10 ⁷～1 * 10 ⁹Pa.

Embodiment

In JP-B 3410075, still exist because the crystallization speed that the thermal treatment after being shaped causes is not enough, and the problem that reduces of the transparency of sheet material, film.In JP-B 3411168, the aliphatic polyester molding that can't obtain having flexibility, crystallization speed is good and the transparency is excellent.In WO-A 2003/042302, the crystallization speed of its lactide acid polymer composition is not enough.

The present invention relates to that crystallization speed is good, the Biodegradable resin composition and the manufacture method thereof of temperature sensibility and excellent heat resistance.

In the invention described above, 60 ℃ of condition following thermal treatment shown in above-mentioned (i) 36 hours or 60 hours was to be used to sufficient treatment condition that crystallization is finished, in fact the transparency after handling reaches certain value, can not change even if proceed the more thermal treatment transparency yet, so be heat-treated to index under this condition for the storage stability of the transparency.In addition, above-mentioned (ii) shown in the scope of storage modulus during 25 ℃ of condition have good flexibility when representing to use as the soft resin composition.Above-mentioned (iii) shown in the scope of storage modulus during 60 ℃ of condition represent temperature sensibility and thermotolerance to be brought up to realistic scale by crystallization.Therefore, the problem enumerated before having solved of the Biodegradable resin composition of the present invention that satisfies all conditions shown in above-mentioned (i)～(iii).

By method of the present invention, can improve crystallization speed, temperature sensibility and the thermotolerance of Biodegradable resin composition, and when being applied in transparent organism degradation property resin, can access Biodegradable resin composition with excellent transparency.In addition, Biodegradable resin composition crystallization speed of the present invention is good, temperature sensibility and excellent heat resistance, and can keep the excellent transparency when being used for transparent organism degradation property resin.

[Biodegradable resin]

As the Biodegradable resin that uses among the present invention, preferably has vibrin according to the biological degradability of JIS K6953 (ISO14855) " the have a liking for oxygen and ultimate biological degradability and disintegration had a liking under the oxygen composting conditions of control are tested ".

The biological degradability that the Biodegradable resin that uses among the present invention so long as have is decomposed into the relevant low molecular compound of natural microorganism gets final product, and is not particularly limited.For example can list poly(hydrobutyl ester), polycaprolactone, polybutylene succinate, polybutylene succinate/tetramethylene adipate, polydiethylene glycol succinate, polylactic resin, polymalic acid, polyglycolic acid, poly-dioxanone (polydioxanone), poly-aliphatic polyesters such as (2-oxetanone (oxetanone)); Aliphatics aromatic copolyesters such as polybutylene succinate/mutual-phenenyl two acid bromide two alcohol ester, poly adipate succinic acid ester/mutual-phenenyl two acid bromide two alcohol ester, poly-hexanodioic acid fourth diester/butylene terephthalate; Mixture of natural polymers such as starch, Mierocrystalline cellulose, chitin, chitosan, gluten, gelatin, zein, soy-protein, collagen, Keratin sulfate and above-mentioned aliphatic polyester or aliphatics aromatic copolyester etc.

As Biodegradable resin, from bringing into play the viewpoint of effect of the present invention more significantly, the preferably transparent Biodegradable resin.Among the present invention, transparent organism degradation property resin is meant that haze value when thickness is 0.5mm smaller or equal to 20% Biodegradable resin, can list polylactic resin, polyglycolic acid etc.

In addition, the haze value of Biodegradable resin is to use the value that the integrating sphere type light penetration determinator (haze meter) of JIS-K7105 regulation is measured.

Wherein, from processibility, economy, can obtain the viewpoint with transitivity, more preferably polylactic resin in a large number.Here, polylactic resin is meant the multipolymer of poly(lactic acid) or lactic acid and hydroxycarboxylic acid.As hydroxycarboxylic acid, can list oxyacetic acid, hydroxybutyric acid, hydroxypentanoic acid, hydroxypentanoic acid, hydroxycaproic acid, hydroxyl enanthic acid etc., preferred alcohol acid, hydroxycaproic acid.Preferred polylactic acid molecule structure is that the lactic acid units by the enantiomorph separately of the unit of the L-lactic acid of 20～100 moles of % or D-lactic acid and 0～20 mole of % constitutes.In addition, the multipolymer of lactic acid and hydroxycarboxylic acid is made of unit and 0～15 mole of % hydroxycarboxylic acid unit of 85～100 moles of %L-lactic acid or D-lactic acid.These polylactic resin can be by the material selecting to need structure from L-lactic acid, D-lactic acid and hydroxycarboxylic acid as raw material, dewaters polycondensation and obtains.Preferably,, carry out ring-opening polymerization, obtain thus from as the rac-Lactide of lactic acid cyclic dimer, as material that need to select structure the glycollide of oxyacetic acid cyclic dimer and the caprolactone etc.Comprise the Study of Meso-Lactide of L-rac-Lactide, D-rac-Lactide, D-lactic acid and L-lactic acid cyclic dimerization in the rac-Lactide and as the DL-rac-Lactide of the racemic mixture of D-rac-Lactide and L-rac-Lactide as D-lactic acid cyclic dimer as L-lactic acid cyclic dimer.Can use any rac-Lactide among the present invention.But preferred main raw material is D-rac-Lactide or L-rac-Lactide.

As commercially available Biodegradable resin, for example can listing, Dupont company produces, trade(brand)name Biomax; BASF AG produces, trade(brand)name Ecoflex; Eastman Chemicals company produces, trade(brand)name EasterBio; Clear and polymer (strain) is produced, trade(brand)name Bionolle; Japan's synthetic chemical industry (strain) is produced, trade(brand)name Matabi; Shimadzu Seisakusho Ltd.'s (strain) produces, trade(brand)name ラ Network テイ; Mitsui Chemicals (strain) is produced, trade(brand)name Lacea; Japan's catalyzer (strain) is produced, trade(brand)name Lunarle; Chisso (strain) produces, trade(brand)name ノボ Application; The production of Cargill DowPolymers company, trade(brand)name Nature works etc.

Wherein, (for example Mitsui Chemicals (strain) is produced, trade(brand)name Lacea preferably can to list polylactic resin; The production of Cargill Dow Polymers company, trade(brand)name Nature works).

[nucleus agent]

The nucleus agent of using among the present invention from crystallization speed and thermotolerance, temperature sensibility and transparent viewpoint, is to have the fatty compounds that is selected from least a group in ester group, hydroxyl and the amide group more than 2 in the nucleus agent molecule; Be preferably the fatty compounds that has 1 above hydroxyl and have 1 above ester group or amide group; More preferably have 2 above hydroxyls and have the fatty compounds of 1 above ester group or amide group; Be preferably the fatty compounds that has 2 above hydroxyls and have 2 above ester groups or amide group especially.The fusing point of nucleus agent is preferably greater than and equals 65 ℃, more preferably in the 70 ℃～scope of (fusing point of Biodegradable resin (Tm)+50 ℃), particularly preferably in the 80 ℃～scope of (Tm+20 of Biodegradable resin ℃).Specifically, be preferably 70～220 ℃, more preferably 80～190 ℃.Though the reason that effect of the present invention improves is also uncertain, but think if having above-mentioned functional group more than 2, then the interaction with Biodegradable resin becomes well, consistency improves, result's differential in resin looses, perhaps by having more than 1, being preferably the hydroxyl more than 2, it is good that the dispersiveness in Biodegradable resin becomes; Then the consistency in the Biodegradable resin is become good by the ester group or the amide group that have more than 1, be preferably more than 2.If the fusing point of nucleus agent is higher than thermal treatment temp and smaller or equal to the melting temperature of resin combination, thereby then because its dispersed raising of nucleus agent dissolving when mixing, if the stabilization and the thermal treatment temp that are higher than thermal treatment temp then generate owing to nucleus improve, so the viewpoint that improves from crystallization speed also is preferred.In addition, because micro crystal is promptly separated out in above-mentioned preferred nucleus agent in a large number the process that begins to cool down from the resin molten state, therefore also preferred from the viewpoint of the transparency, the raising of crystallization speed.

The cold crystallization temperature (Tcc) that the nucleus agent of using among the present invention preferably contains the Biodegradable resin composition that can make following definitions is smaller or equal to 65 ℃ or melt crystallization temperature (Tmc) compound more than or equal to 100 ℃.

＜cold crystallization temperature (Tcc) 〉

Biodegradable resin with respect to 100 weight parts, mix 15 weight part polyoxyethylene (the average addition mole number of oxyethane is 6) triacetin as softening agent (below be abbreviated as POE (6) triacetin) and 1 weight part nucleus agent under more than or equal to the temperature of the fusing point (Tm) of Biodegradable resin, after their coolings, obtain Biodegradable resin composition with non-crystalline state (promptly the degree of crystallinity of measuring by wide-angle x-ray diffraction is less than and equals 1% condition), the cold crystallization peak temperature that uses differential scanning type calorimeter to measure this Biodegradable resin composition begin with 8 ℃/minute intensification condition from room temperature under is defined as cold crystallization temperature (Tcc).

＜melt crystallization temperature (Tmc) 〉

Biodegradable resin with respect to 100 weight parts, mix 15 weight part POE (6) triacetins and 1 weight part nucleus agent under more than or equal to the temperature of the fusing point (Tm) of Biodegradable resin as softening agent, obtain Biodegradable resin composition, the fusion-crystallization peak temperature that uses differential scanning type calorimeter to measure this Biodegradable resin composition begin with 5 ℃/minute cooling condition from molten state under is defined as melt crystallization temperature (Tmc).

As the Biodegradable resin that in the mensuration of cold crystallization temperature (Tcc) and melt crystallization temperature (Tmc), uses, be preferably L-lactic acid purity more than or equal to 95% polylactic resin, the preferred LACEA H-400 (fusing point Tm=166 ℃, MFR=3 (190 ℃, 2.16kg)) that uses as the crystallization stage polylactic resin of L height purity product, preferred especially Mitsui Chemicals (strain) production.Tm is the value of obtaining from the crystallization fusion endotherm peak temperature that the temperature-raising method according to the differential scanning calorimetric measurement (DSC) of JIS-K7121 obtains.

The softening agent that uses in the mensuration of cold crystallization temperature (Tcc) and melt crystallization temperature (Tmc) uses synthetic POE (6) triacetin in synthesis example 1.

The concrete assay method of cold crystallization temperature (Tcc) and melt crystallization temperature (Tmc) is to use 180 ℃ Labo plastmill (the smart mechanism of (strain) Japan is done institute and produced) to use 180 ℃ pressing make-up machine to make the test film of thickness as 0.5mm by mixing 10 minutes of the composition of 100 weight part polylactic resin (for example LACEAH-400 of Mitsui Chemicals (strain) production), 15 weight part POE (6) triacetins and 1 weight part nucleus agent formation.The sheet material that is shaped during press forming cools off with non-crystalline state (degree of crystallinity of measuring by wide-angle x-ray diffraction is less than and equals 1% condition).With this sheet material chopping, in the aluminium dish, take by weighing 15mg, use differential scanning calorimetric measurement (DSC) device, begin to measure from room temperature with 8 ℃/minute heat-up rates until 200 ℃.At this moment owing to can observe the exothermal peak of cold crystallization, therefore with this peak temperature as cold crystallization temperature (Tcc).Then, measure until room temperature since 200 ℃ with 5 ℃/minute cooling rate.At this moment owing to can observe the exothermal peak of fusion-crystallization, therefore with this peak temperature as melt crystallization temperature (Tmc).

The cold crystallization temperature (Tcc) of the present invention's definition can be less than the compound that equals 65 ℃ and be considered to have following ability, promptly have when adding in the Biodegradable resin that contains softening agent, non-crystalline state after being shaped (promptly the degree of crystallinity of measuring by wide-angle x-ray diffraction is less than and equals 1% condition) forms the ability of many small nucleus and crystal growth interface (surface-area) until the process of the crystallization by thermal treatment, when heat-treating, these many small nucleus and crystal growth interface (surface-area) play a role to promoting crystallization and crystalline miniaturization, and the result brings effect of the present invention into play.

Therefore, the inventor finds to contain as demonstration the parameter of performance of the nucleus agent of mineral compound or organic compound, has clear and definite relevant between the cold crystallization temperature of afore mentioned rules (Tcc) and crystallization speed and the micro-crystallizationization.And, when cold crystallization temperature (Tcc) smaller or equal to 65 ℃, during preferably smaller or equal to 63 ℃, the crystallization speed that contains the Biodegradable resin composition of softening agent significantly improves, therefore can realize improving processibility, reduce cost, temperature sensibility and stable on heating raising, and can the miniaturization crystallization, so when being transparent organism degradation property resin such as poly(lactic acid), can keep the excellent transparency.

Also find in addition, in the time of will containing the Biodegradable resin composition crystallization of softening agent cooling off from the molten state of polymkeric substance, as the parameter that shows nucleus agent performance, clear and definite being correlated with arranged between melt crystallization temperature of afore mentioned rules (Tmc) and the crystallization speed, adding Tmc more than or equal to 100 ℃, when being preferably greater than the nucleus agent that equals 105 ℃, the crystallization speed that contains the resin combination of softening agent significantly improves, therefore can realize improving processibility, reduce cost, temperature sensibility and stable on heating raising, and in the injection molded product, also can obviously improve shock-resistance.

Nucleus agent of the present invention is from the viewpoint of crystallization speed and thermotolerance, temperature sensibility and the transparency, its solubility parameter (SP value, (MPa) ^1/2) be preferably the scope of (the SP value-2 of Biodegradable resin)～(SP value+1 of Biodegradable resin), more preferably (the SP value-1.8 of Biodegradable resin)～(SP value+0.8 of Biodegradable resin) scope, be preferably the scope of (the SP value-1.6 of Biodegradable resin)～(SP value+0.6 of Biodegradable resin), the scope of (the SP value-1.4 of Biodegradable resin)～(SP value+0.4 of Biodegradable resin) more preferably especially.Think that its reason is, because near the SP value of resin and because nucleus agent of the present invention differential when mixing is diffusing, relevant with the formation of a plurality of small nucleus and crystal growth interface (surface-area).

As nucleus agent of the present invention, can list aliphatic ester, aliphatic amide, fatty acid metal salt etc., as aliphatic ester, can list fatty acid esters such as glyceryl monostearate, docosoic direactive glyceride, hydroxy fatty acids such as 12-oxystearic acid Witepsol W-S 55; As aliphatic amide, can list aliphatics bisamides such as hydroxy fatty acid monoamide, ethylenebis laurylamide, ethylenebis decyl amide, ethylenebis decoylamide such as 12-oxystearic acid single ethanol amide, hydroxy fatty acid bisamides such as ethylenebis 12-hydroxyl stearylamide, the two 12-hydroxyl stearylamides of hexa-methylene; As fatty acid metal salt, can list hydroxy aliphatic acid metal salts such as 12-oxystearic acid calcium etc.From crystallization speed and thermotolerance, temperature sensibility, and the viewpoint of the transparency is set out, preferred 12-oxystearic acid Witepsol W-S 55 docosoic direactive glyceride, ethylenebis 12-hydroxyl stearylamide, the two 12-hydroxyl stearylamides of hexa-methylene, 12-oxystearic acid single ethanol amide, the ethylenebis decoylamide, the ethylenebis decyl amide, more preferably 12-oxystearic acid Witepsol W-S 55, ethylenebis 12-hydroxyl stearylamide, the two 12-hydroxyl stearylamides of hexa-methylene, 12-oxystearic acid single ethanol amide, further preferred 12-oxystearic acid Witepsol W-S 55, ethylenebis 12-hydroxyl stearylamide, the two 12-hydroxyl stearylamides of hexa-methylene, preferred especially ethylenebis 12-hydroxyl stearylamide, the two 12-hydroxyl stearylamides of hexa-methylene.

When nucleus agent of the present invention being added in the transparent organism degradation property resin such as polylactic resin, can keep the excellent transparency.

When nucleus agent of the present invention is added in the Biodegradable resin that contains softening agent, owing to think that it has non-crystalline state (promptly the degree of crystallinity of measuring by wide-angle x-ray diffraction is less than and equals 1% condition) after being shaped forms a plurality of small nucleus and crystal growth interface (surface-area) until the process of the crystallization that is caused by thermal treatment ability, therefore, when non-crystalline state began to heat up, small nucleus generates the cold junction crystallization enthalpy that number increases then to be measured more to be reduced more.Its result, the difference of the absolute value of crystallization melting enthalpy and cold junction crystallization enthalpy become big.Begin to be preferably greater than from room temperature with 8 ℃/minute and equal 25J/g, more preferably greater than equaling 28J/g to Tm+20 ℃ poor (| Δ Hm|-| Δ Hcc|) of heat up surveying the absolute value of periodic crystallization melting enthalpy Δ Hm and cold junction crystallization enthalpy Δ Hcc with DSC.

[softening agent]

The softening agent that uses among the present invention is not particularly limited, and except the softening agent that uses in Biodegradable resin usually, can also list the material shown in following (1)～(12).

(1) following (a) composition and (b) ester of composition

(a) being selected from the acid anhydride of the hydroxyl fused polycyclic aromatic carboxylic acid, hydroxyl alicyclic carboxylic acid or these carboxylic acids that have 1 above hydroxyl and carboxyl in the aromatic hydroxyl carboxylic acid shown in the general formula (I), 1 molecule or carbonatoms is at least a in 1～3 the lower alkyl esters.

(in the formula, X ¹Expression hydrogen atom, hydroxyl, carbonatoms are 1～22 alkyl, alkenyl or alkoxyl group or halogen atom, and d and e are respectively integer and the d+e=5 more than or equal to 1.F represents 0～3 integer.D X ¹Can be identical also can be different.)

(b) be selected from the oxy-compound of from fatty alcohol, alicyclic alcohol, aromatic alcohols, phenol and alkylphenol, selecting, perhaps at least a in the oxirane affixture of these oxy-compound (carbonatoms of alkylidene group is 2～4, the average addition mole number of oxirane greater than 0 and smaller or equal to 30).

(2) following (c) composition and (d) ester of composition

(c) being selected from the acid anhydride of the fused polycyclic aromatic carboxylic acid, alicyclic carboxylic acid or these carboxylic acids that have 1 above carboxyl in the aromatic carboxylic acid shown in the general formula (II), 1 molecule or carbonatoms is at least a in 1～3 the lower alkyl esters.

(in the formula, X ²Expression hydrogen atom, methyl or halogen atom, g and h are respectively integer and the g+h=6 more than or equal to 1.G X ²Can be identical also can be different.)

(d) be selected from least a in the oxirane affixture (carbonatoms of alkylidene group is 2～4, the average addition mole number of oxirane be 1～30) of the monohydroxy compound of from aliphat single-alcohol, alicyclic single alcohol, aromatic series list alcohol, phenol and alkylphenol, selecting.

(3) the N-alkylide of aromatic sulfonamide (carbonatoms of alkyl is 1～22)

(4) following (e) composition and (f) ester of composition

(e) being selected from aromatic series monocarboxylic acid, the carbonatoms shown in the general formula (III) is at least a in 1～22 straight or branched aliphatics monocarboxylic acid, fused polycyclic aromatic series monocarboxylic acid, alicyclic monocarboxylic acid or these the monocarboxylic lower alkyl esters (carbonatoms of alkyl is 1～3).

(in the formula, X ³Expression hydrogen atom, carbonatoms are 1～22 alkyl, alkenyl or alkoxyl group or halogen atom, and i represents 1～5 integer, i X ³Can be identical also can be different.)

(f) be selected from least a in the oxirane affixture that from the polyvalent alcohol that with the carbonatoms that has 3 above hydroxyls the 2 yuan of alcohol of aliphatics shown in the general formula (IV), 1 molecule is 3～30,1 molecule, has the oxy-compound of selecting in the alicyclic diol of 2 hydroxyls or methylol (carbonatoms of alkylidene group is 2～4, the average addition mole number of oxirane of each hydroxyl greater than 0 and smaller or equal to 10).

(in the formula, Y and Z represent carbonatoms be 1～8 alkyl or alkenyl, can be identical also can be different.)

(5) ester of aliphatic dicarboxylic acid polyoxyalkylene alkyl ester, polyalkylene glycol fatty acid ester or aliphatic polyol and M-nitro benzoic acid

(6) following (g) composition and (h) ester of composition

(g) containing with logical represented repeated structural unit (hereinafter referred to as structural unit (V)) and two ends of formula V is the polycarbonate diol of hydroxyl.

(in the formula, j represents 2～6 integer.)

(h) being selected from the acid anhydride of hydroxyl condensation polycyclic formula aromatic series monocarboxylic acid, the alicyclic monocarboxylic acid of hydroxyl or these carboxylic acids that 1 above hydroxyl is arranged in the aromatic series monocarboxylic acid shown in the general formula (VI), fused polycyclic aromatic series monocarboxylic acid, alicyclic monocarboxylic acid, 1 molecule or carbonatoms is at least a in 1～3 the lower alkyl esters.

(in the formula, X ⁴Expression hydrogen atom, hydroxyl, carbonatoms are alkyl, alkenyl or alkoxyl group or the halogen atom of 1～22 straight or branched, and k represents 1～5 integer, k X ⁴Can be identical also can be different.)

(7) following (i) composition and (j) ester of composition

(i) being selected from the acid anhydride of carboxylic acid with at least 1 cyano group or these carboxylic acids or carbonatoms is at least a in 1～3 the lower alkyl esters.

(j) be selected from least a in the oxirane affixture (carbonatoms of alkylidene group is 2～4, the average addition mole number of oxirane greater than 0 and smaller or equal to 30) of the oxy-compound from fatty alcohol, alicyclic alcohol, aromatic alcohols, phenol and alkylphenol, selected or these oxy-compound.

(8) ester of following (k) composition and (1) composition

(k) be selected from least a more than or equal in the oxirane affixture of 3 polyvalent alcohol of the carbonatoms that has 3 above hydroxyls in 1 molecule.

(l) being selected from carbonatoms is that 2～12 straight or branched lipid acid or its carbonatoms are at least a in 1～3 the lower alkyl esters.

(9) following (m) composition and (n) composition generation aldolization or acetal shift reaction and the cyclic acetal that obtains.

(m) at least a in the polyvalent alcohol more than 3 yuan.

(n) be selected from the carbonyl compound shown in the general formula (VII) and be at least a in the acetal that obtains of 1～6 lower alcohol by this carbonyl compound and carbonatoms.

(in the formula, R ¹And R ²Identical or different, expression hydrogen atom, carbonatoms are 1～21 straight chain, side chain or cyclic alkyl.R ¹And R ²Also can form carbonatoms together and be 2～24 alkylidene group.)

(10) with the represented compound of general formula (VIII).

R ¹¹O(AO) _nR ¹² (VIII)

(in the formula, R ¹¹The expression carbonatoms is that 1～15 straight or branched alkyl, alkenyl or carbonatoms are 7～18 alkyl phenyl, R ¹²The expression carbonatoms is 2～15 acyl group, alkyl or alkenyl, and R ¹¹And R ¹²Total carbon atom number be 4～18.A be carbonatoms be 2～4 alkylidene group, n be 1～20 the numerical value, a n A of the average addition mole number of expression oxirane can be identical also can difference.)

(11) be the ester that at least a sour composition and at least a pure composition in the oxirane affixture that is selected from 1 yuan or 2 yuan alcohol in 1～3 the lower alkyl esters form by being selected from aliphatics polycarboxylic acid more than 3 yuan, aromatic series polycarboxylic acid, fused polycyclic aromatic carboxylic acid, alicyclic carboxylic acid or their acid anhydride more than 3 yuan or their carbonatoms.

(12) compound of representing with general formula (IX).

B-[O(EO) _s-R ¹³] ₂ (IX)

(in the formula, B represents to remove the residue of 2 hydroxyls, R from carbonatoms is 2 yuan of alcohol of 2～8 straight or branched ¹³The expression carbonatoms is the acyl group of 2～6 straight or branched, 2 R ¹³Can be identical also can be different.EO represents oxyethylene group, the average addition mole number of s representative ring oxidative ethane, is the number of 3≤2s≤20.)

The softening agent that can use in the present invention like this can list; Para Hydroxy Benzoic Acid esters such as Para Hydroxy Benzoic Acid 2-ethylhexyl; the polyol esters such as acetic ester of the ethylene oxide adduct of glycerine; phthalic esters such as di-2-ethylhexyl phthalate; adipic acid esters such as Octyl adipate; maleic acid esters such as n-butyl maleate; citrates such as Tributyl O-acetylcitrate; alkyl phosphates such as Tritolyl Phosphate; the ester of succsinic acid and triethylene glycol monomethyl ether; the ester of hexanodioic acid and diethylene glycol monomethyl ether; tricarboxylic esters such as trioctyl trimellitate; 1; 3; the alkyl ether acetate of oneself three acid of 6-and the polycarboxylic acids such as ester of butyleneglycol; acetylize polyxyethylated (carbonatoms of alkyl is 2～15) ethers such as acetylize polyoxyethylene hexyl ether; the addition mole number of oxyethane is 3～20 polyoxyethylene glycol diacetate esters; polyoxyethylene 1,4-butanediol ethere diacetate esters etc.Flexibility from Biodegradable resin; the viewpoint that the transparency is excellent is set out; Para Hydroxy Benzoic Acid esters such as preferred Para Hydroxy Benzoic Acid 2-ethylhexyl; the acetic ester of the ethylene oxide adduct of glycerine; the addition mole number of oxyethane is 3～20 polyol esters such as polyoxyethylene glycol diacetate esters; phthalic esters such as diethyl phthalate; acetylated monoglyceride; (many) glyceryl ester such as two glycerine tetraacetates; citrates such as Tributyl O-acetylcitrate; alkyl phosphates such as Tritolyl Phosphate; the ester of succsinic acid and triethylene glycol monomethyl ether; the ester of hexanodioic acid and diethylene glycol monomethyl ether; 1; 3, the alkyl ether acetate of oneself three acid of 6-and the polycarboxylic acids such as ester of butyleneglycol.Viewpoint from flexibility, the transparency, crystallization speed excellence, more preferably the addition mole number of the polyol esters such as acetic ester of the ethylene oxide adduct of glycerine, oxyethane is the ester, 1 of ester, hexanodioic acid and the diethylene glycol monomethyl ether of 3～10 polyoxyethylene glycol diacetate esters, succsinic acid and triethylene glycol monomethyl ether, 3, the alkyl ether acetate of oneself three acid of 6-and the polycarboxylic acids such as ester of butyleneglycol.From the viewpoint of flexibility, the transparency, crystallization speed and anti-exudative excellence, further the addition mole number of the acetic ester of 3～6 moles of affixtures of oxyethane of preferably glycerine, oxyethane is the ester of ester, hexanodioic acid and the diethylene glycol monomethyl ether of 5～10 polyoxyethylene glycol diacetate esters, succsinic acid and triethylene glycol monomethyl ether.From flexibility, the transparency, crystallization speed, anti-exudative, excellent biological degradability and the viewpoint of anti-irritating smell, the ester of preferred especially succsinic acid and triethylene glycol monomethyl ether.

[Biodegradable resin composition]

Biodegradable resin composition of the present invention is to satisfy above-mentioned (i), (ii) and the composition of condition (iii), haze value when the thickness of the following thermal treatment of 60 ℃ shown in above-mentioned (i) after 36 hours or 60 hours is 0.5mm is preferably smaller or equal to 15%, is more preferably less than to equal 10%.Above-mentioned temperature shown in (ii) is that 25 ℃, the storage modulus when frequency is 50Hz (E ') are preferably 1 * 10 ⁸～1.5 * 10 ⁹Pa.Above-mentioned temperature shown in (iii) is that 60 ℃, the storage modulus when frequency is 50Hz (E ') are preferably 2 * 10 ⁷～1 * 10 ⁹Pa.In addition, the haze value of Biodegradable resin composition and storage modulus (E ') are the values that the measuring method put down in writing by embodiment is measured here.

When using the high Biodegradable resin of the transparency, except the effect of the invention described above, also can obtain the excellent Biodegradable resin composition of the transparency as Biodegradable resin composition of the present invention.

As the Biodegradable resin in the Biodegradable resin composition of the present invention, softening agent, the preferably combination of nucleus agent, from improving crystallization speed, temperature sensibility, thermotolerance, the viewpoint of the transparency is set out, Biodegradable resin is preferably polylactic resin, softening agent is preferably polyoxyethylene methyl ether succinic diester (two carboxylates of succsinic acid and triethylene glycol monomethyl ether more preferably), polyoxyethylene methyl ether di adipate (two carboxylates of hexanodioic acid and diethylene glycol monomethyl ether), the acetic ester of the ethylene oxide adduct of glycerine (POE (6) triacetin more preferably), oxyethane addition mole number is 3～10 polyoxyethylene glycol diacetate esters (mole number of oxyethane addition more preferably is 5～10 polyoxyethylene glycol diacetate esters), and the nucleus agent is preferably has 2 above hydroxyls, and fatty compounds (more preferably be selected from the two 12-hydroxyl stearylamides of hard esteramides of ethylenebis 12-hydroxyl and hexa-methylene at least a) with 2 above ester groups or amide group; Two carboxylates, the nucleus agent that is preferably Biodegradable resin especially and is poly(lactic acid), softening agent and be succsinic acid and triethylene glycol monomethyl ether is to be selected from least a in hard esteramides of ethylenebis 12-hydroxyl and the two 12-hydroxyl stearylamides of hexa-methylene.

Even if in Biodegradable resin, particularly polylactic resin, add above-mentioned softening agent and nucleus agent separately, can not obtain effect of the present invention, can't solve problem.The crystallization of polymkeric substance is to carry out with 2 stages of the generation of polymkeric substance nucleus, polymer fragments diffusion.From improving the viewpoint of crystallization speed, described nucleus agent improves dispersed, as to generate a plurality of fine nucleus agent during in cooling moment crystal in dissolving under the resin molten state, and the result promotes the generation of polymkeric substance nucleus, and it is remarkable to increase the effect of nucleus number.But, even if the nucleus of polymkeric substance generates, if the velocity of diffusion of polymer fragments is slow, total crystallization speed then is not satisfied level.For the velocity of diffusion that improves this polymkeric substance can improve temperature, but because the nucleus of polymkeric substance becomes unstable, therefore not preferred.So, because the effect of the above-mentioned softening agent raising polymer crystals speed of growth is very big, even if therefore under 50～85 ℃ low temperature, also can obtain sufficient crystallization speed.This effect can make up above-mentioned nucleus agent and softening agent and realize first.In addition, in order to obtain sufficient crystallization speed of the present invention and shock-resistance, the addition of softening agent is with respect to the Biodegradable resin of 100 weight parts, is preferably greater than to equal 7 weight parts, also is preferably greater than from the viewpoint of shock-resistance to equal 7 weight parts.

On the other hand, from keeping the transparent also preferred above-mentioned nucleus agent of viewpoint and the combination of softening agent.In order to improve the transparency, if make and begin to carry out equably crystal growth from the number of polymers nucleus, then micro-crystallizationization, the transparency uprise, and preferably can generate the above-mentioned nucleus agent of a plurality of crystalline.In addition, with above-mentioned same, if at high temperature make its crystallization, then the polymkeric substance nucleus becomes unstable, therefore from keeping transparent viewpoint, also preferred Biodegradable resin with respect to 100 weight parts adds the very large above-mentioned softening agent of effect more than or equal to the raising polymer crystals speed of growth of 7 weight parts, and makes its crystallization under 50～85 ℃ low temperature.

Biodegradable resin composition of the present invention contains softening agent and nucleus agent, and the content of softening agent is preferably 7～70 weight parts, more preferably 10～70 weight parts, more preferably 10～50 weight parts, preferred especially 15～45 weight parts with respect to the Biodegradable resin of 100 weight parts.The content of nucleus agent with respect to the Biodegradable resin of 100 weight parts be preferably 0.1～5 weight part, more preferably 0.3～5 weight part, be preferably 0.5～3 weight part especially.

Provided separately preferred value etc. above, but different along with the purposes of resin combination and working method has preferred combination.When using as the injection molded product, Biodegradable resin composition of the present invention is 25 ℃ in above-mentioned temperature shown in (ii), the storage modulus when frequency is 50Hz (E ') is preferably 1 * 10 ⁹～2.0 * 10 ⁹Pa, more preferably 1.5 * 10 ⁹～2 * 10 ⁹Pa.Above-mentioned temperature shown in (iii) is that 60 ℃, the storage modulus when frequency is 50Hz (E ') are preferably 1 * 10 ⁸～1 * 10 ⁹Pa, more preferably 2 * 10 ⁸～1 * 10 ⁹Pa.When using as the sheet material with the flexibility that is equal to mutually with polypropylene or film, Biodegradable resin composition of the present invention is 25 ℃ in above-mentioned temperature shown in (ii), the storage modulus when frequency is 50Hz (E ') is preferably 1 * 10 ⁹～2.0 * 10 ⁹Pa, more preferably 1.2 * 10 ⁹～1.8 * 10 ⁹Pa.Above-mentioned temperature shown in (iii) is that 60 ℃, the storage modulus when frequency is 50Hz (E ') are preferably 1 * 10 ⁸～1 * 10 ⁹Pa, more preferably 2 * 10 ⁸～1 * 10 ⁹Pa.

With regard to the purposes of above-mentioned 2 examples, the content of softening agent with respect to the Biodegradable resin of 100 weight parts be preferably 7～30 weight parts, more preferably 10～25 weight parts, be preferably 10～20 weight parts especially.

With regard to the purposes of above-mentioned 2 examples,, be preferably transparent organism degradation property resin, polylactic resin more preferably as Biodegradable resin of the present invention from the viewpoint of remarkable performance effect of the present invention.Wherein, viewpoint from crystallization speed, rerum natura, preferably LACEAH-400, LACEA H-100, the LACEA H-440 that produces as crystallization stage polylactic resin, the particularly Mitsui Chemicals (strain) of L-lactic acid high purity product is more preferably LACEA H-400, LACEAH-100 that L-lactic acid purity is produced more than or equal to 95% polylactic resin, particularly Mitsui Chemicals (strain).

When using as the sheet material with the flexibility that is equal to mutually with polyethylene or soft PVC (containing 40～70 weight part dioctyl phthalates as softening agent with respect to 100 parts by weight resin) or film, Biodegradable resin composition of the present invention is 25 ℃ in above-mentioned temperature shown in (ii), the storage modulus when frequency is 50Hz (E ') is preferably 1 * 10 ⁸～1 * 10 ⁹Pa, more preferably 2 * 10 ⁸～1 * 10 ⁹Pa.Above-mentioned temperature shown in (iii) is that 60 ℃, the storage modulus when frequency is 50Hz (E ') are preferably 1 * 10 ⁷～1 * 10 ⁸Pa, more preferably 2 * 10 ⁷～1 * 10 ⁸Pa.

With regard to such use, the content of softening agent with respect to the Biodegradable resin of 100 weight parts be preferably 15～50 weight parts, more preferably 20～40 weight parts, be preferably 20～30 weight parts especially.

With regard to such use,,, be preferably transparent organism degradation property resin, polylactic resin more preferably as Biodegradable resin of the present invention from the viewpoint of remarkable performance effect of the present invention.Wherein, viewpoint from rerum natura, the preferred mixing as the crystallization stage polylactic resin of L-lactic acid high purity product with as the noncrystalline level polylactic resin of L-lactic acid low-purity product, especially preferably LACEA H-400, the LACEA H-100 that produces more than or equal to the Mitsui Chemicals (strain) of 95% crystallization stage polylactic resin as L-lactic acid purity, as the L-lactic acid purity of noncrystalline grade of polylactic resin mixture smaller or equal to the LACEA H-280 of 90% Mitsui Chemicals (strain) production.And, even if the LACEA H-440 that uses Mitsui Chemicals (strain) to produce with monomer also can mix with noncrystalline level polylactic resin.The blending ratio of (L-lactic acid purity more than or equal to 95% crystallization stage polylactic resin) in addition/(L-lactic acid purity smaller or equal to 90% noncrystalline level polylactic resin), from the viewpoint of crystallization speed, be preferably 95/5～20/80 (mass ratio), more preferably 90/10～20/80, be preferably 80/20～25/75, more preferably 75/25～25/75 especially.

In addition, the second-order transition temperature (Tg of the Biodegradable resin of Biodegradable resin composition of the present invention ¹) with the second-order transition temperature (Tg of Biodegradable resin composition ²) poor [Tg ¹-Tg ²] preferably in 10～80 ℃ scope, more preferably 15～70 ℃ scope, preferred especially 20～60 ℃ scope.

The degree of crystallinity of Biodegradable resin composition of the present invention is different and different according to having or not of the kind of Biodegradable resin, softening agent etc., therefore can not generally determine, but the viewpoint from performance effect of the present invention is preferably 5～50%, more preferably 10～40%.In addition, the degree of crystallinity of Biodegradable resin composition of the present invention is the value that the assay method put down in writing by embodiment is measured here.

Biodegradable resin composition of the present invention can also contain other compositions such as hydrolysis inhibitor, antioxidant or lubricant except the nucleus agent of the invention described above, softening agent.As hydrolysis inhibitor, carbodiimide compounds such as polycarbodiimide compound can be listed, polycarbodiimide compound that the reaction by single carbodiimide such as dicyclohexyl carbodiimide or di-isopropyl carbodiimide and organic diisocyanate generates etc. can be listed.The content of hydrolysis inhibitor is preferably 0.05～3 weight part, 0.1～2 weight part more preferably with respect to 100 weight part Biodegradable resins.Can list the antioxidant of hindered phenol (hindered phenol) or phosphoric acid salt as antioxidant.The content of antioxidant is preferably 0.05～3 weight part, 0.1～2 weight part more preferably with respect to the Biodegradable resin of 100 weight parts.As lubricant, can list for example hydrocarbon system wax class such as polyethylene wax, fatty acids such as hard ester acid, fatty acid esters such as glyceryl ester, metallic soap classes such as calcium stearate, ester type waxes class, alkylbenzene sulfonates etc. such as montanic acid wax have the aniorfic surfactant etc. that the aniorfic surfactant, polyoxyethylene alkyl ether sulfate salt of aromatic nucleus etc. has oxirane addition part.The content of these lubricants is preferably 0.05～3 weight part, is more preferably 0.1～2 weight part with respect to the Biodegradable resin of 100 weight parts.

Biodegradable resin composition of the present invention can also contain antistatic agent as other composition beyond above-mentioned, antifogging agent, photostabilizer, UV light absorber, pigment, inorganic filler, mould inhibitor, antiseptic-germicide, whipping agent, fire retardant etc. in the scope that does not hinder the object of the invention to reach.

Therefore Biodegradable resin composition of the present invention can also have the advantage that softening agent is difficult to decompose for example processing under 130～200 ℃ of low temperature such as grade because processibility is good, can be shaped as film or sheet material, is used for various uses.

[manufacture method of Biodegradable resin composition]

The manufacture method of Biodegradable resin composition of the present invention comprises following operation: (1) is with Biodegradable resin, softening agent and nucleus agent of the present invention blended operation under more than or equal to the temperature of this Biodegradable resin fusing point (Tm); (2) operation of heat-treating under more than or equal to the second-order transition temperature (Tg) of Biodegradable resin composition and temperature less than Tm.

In addition, preferably pass through operation (1) postcooling, become the method for carrying out operation (2) behind the non-crystalline state (degree of crystallinity of promptly using wide-angle x-ray diffraction to measure is less than and equals 1% condition); Perhaps pass through operation (1) postcooling, carry out the method for operation (2) at once.From embodying the viewpoint that crystallization speed of the present invention improves effect, more preferably pass through operation (1) postcooling, carry out the method for operation (2) at once.

Object lesson as the operation in the manufacture method of Biodegradable resin composition of the present invention (1), can be undertaken by usual method, for example can list the Biodegradable resins of fusion on one side such as using forcing machine, Yi Bian mix the method etc. of nucleus agent of the present invention and softening agent.From the viewpoint of the dispersiveness of nucleus agent of the present invention, softening agent, the temperature of operation (1) for more than or equal to the fusing point (Tm) of Biodegradable resin, be preferably Tm～Tm+100 ℃ scope, Tm～Tm+50 ℃ scope more preferably.For example, when Biodegradable resin is polylactic resin, be preferably 170～240 ℃, more preferably 170～220 ℃.

Object lesson as the operation in the manufacture method of composition of the present invention (2), can carry out the method that for example can list method that the Biodegradable resin composition that uses forcing machine etc. to extrude is heat-treated, Biodegradable resin composition is filled in the mould and Biodegradable resin composition is heat-treated by injection molding machine etc. etc. by usual method.From improving the viewpoint of crystallization speed, the temperature of operation (2) for more than or equal to the second-order transition temperature (Tg) of Biodegradable resin composition and less than Tm, be preferably Tg～Tg+100 ℃ scope, more preferably Tg+10～Tg+80 ℃ scope, be preferably Tg+20～Tg+70 ℃ scope especially.For example, when Biodegradable resin is the Biodegradable resin composition of polylactic resin, is preferably 50～120 ℃, more preferably 50～100 ℃, is preferably 50～85 ℃ especially.

In addition, the fusing point of Biodegradable resin (Tm) is the value of being tried to achieve by the crystallization fusion endotherm peak temperature that obtains by the temperature-raising method according to the differential scanning calorimetric measurement (DSC) of JIS-K7121.In addition, the second-order transition temperature of Biodegradable resin composition (Tg) is the value of being tried to achieve by the peak temperature of the out-of-phase modulus in the Measurement of Dynamic Viscoelasticity (E "), and this value is the value of measuring by the Measurement of Dynamic Viscoelasticity method of putting down in writing among the embodiment.

Embodiment

Following examples describe enforcement of the present invention.Embodiment is to the illustrative explanation of the present invention, is not used for limiting the present invention.

The cold crystallization temperature of the nucleus agent of using in embodiment and comparative example, melt crystallization temperature, SP value and fusing point are shown in table 1.In addition, cold crystallization temperature of nucleus agent (Tcc) and melt crystallization temperature (Tmc) are measured in order to following method.

The measuring method of＜cold crystallization temperature (Tcc) and melt crystallization temperature (Tmc) 〉

Use 180 ℃ Labo plastmill (the smart mechanism of (strain) Japan is done institute and produced) to use 180 ℃ pressing make-up machine to make the test film of thickness by mixing 10 minutes of the composition of 100 weight part polylactic resin (LACEA H-400, SP value 21.5, the Tm of Mitsui Chemicals (strain) production is that 166 ℃, Tg are 62 ℃), 15 weight part softening agent (synthetic POE (6) triacetin in synthesis example 1) and 1 weight part nucleus agent formation as 0.5mm.The sheet material that is shaped during press forming cools off with non-crystalline state (degree of crystallinity of using wide-angle x-ray diffraction to measure is less than and equals 1% condition).With this sheet material chopping, in the aluminium dish, take by weighing 15mg, use differential scanning calorimetric measurement (DSC) device, begin to measure from room temperature with 8 ℃/minute heat-up rates until 200 ℃.At this moment owing to can observe the exothermal peak of cold junction crystallization, therefore with this peak temperature as cold crystallization temperature (Tcc).Then, measure until room temperature since 200 ℃ with 5 ℃/minute cooling rate.At this moment owing to can observe the exothermal peak of fusion-crystallizationization, therefore with this peak temperature as melt crystallization temperature (Tmc).

Table 1

	The nucleus agent	Cold crystallization temperature (Tcc)	Melt crystallization temperature (Tmc)	The SP value	Fusing point (℃)
	The nucleus agent	Cold crystallization temperature (Tcc)	Melt crystallization temperature (Tmc)	The SP value	Fusing point (℃)	A	12-oxystearic acid Witepsol W-S 55	59.0	-	9.8	86
B	The docosoic direactive glyceride	62.1	-	10.1	76	A	12-oxystearic acid Witepsol W-S 55	59.0	-	9.8	86
B	The docosoic direactive glyceride	62.1	-	10.1	76	C	Ethylenebis 12-hydroxyl stearylamide	60.5	108.8	10.4	142
D	The hard ester acid of 12-hydroxyl single ethanol amide	61.6	-	10.4	98	C	Ethylenebis 12-hydroxyl stearylamide	60.5	108.8	10.4	142
D	The hard ester acid of 12-hydroxyl single ethanol amide	61.6	-	10.4	98	E	The ethylenebis decoylamide	61.0	-	10.6	170
K	The two 12-hydroxyl stearylamides of hexa-methylene	60.9	107.3	10.3	132	E	The ethylenebis decoylamide	61.0	-	10.6	170
K	The two 12-hydroxyl stearylamides of hexa-methylene	60.9	107.3	10.3	132	F	The triglycerin cetylate ^*1	63.2	-	9.0	64
G	The stearic acid monoamide ^*2	70.7	-	9.9	103	F	The triglycerin cetylate ^*1	63.2	-	9.0	64
G	The stearic acid monoamide ^*2	70.7	-	9.9	103	H	The ethylenebis palmitic amide ^*	71.5	-	9.7	149
I	ゲ Le オ one Le MD ^*3	79.8	-	12.7	255	H	The ethylenebis palmitic amide ^*	71.5	-	9.7	149
I	ゲ Le オ one Le MD ^*3	79.8	-	12.7	255	J	Talcum ^*4	74.8	-	-	-
L	Between the two 12-hydroxyl stearylamides of penylene dimethyl	-	94.6	10.7	125	J	Talcum ^*4	74.8	-	-	-

^*1 triglycerin cetylate: Trihexanoylglycerol (pure pharmaceutical worker already makes with light, reagent)

^*2 stearic acid monoamide: KAO. Corp. SA produces lipid acid Amide S

^*3 ゲ Le オ, one Le MD: with two (right-the methyl benzylidene) Sorbitol Powders of following formula (X) expression

^*4: talcum: the SG-2000 (median size D50 is 1.0 μ m) that Japanese Talc produces

Synthesis example 1: the synthesis example of softening agent

With the used for cosmetic concentrated glycerin of producing with respect to 1 mole of colored king (strain), the mol ratio that oxyethane is 6 moles, the above-mentioned concentrated glycerin and the above-mentioned oxyethane of specified amount are encased in the autoclave, with the KOH of 1 mole of % as catalyzer, apply the voltage stabilizing that reaction pressure is 0.3MPa, react down after pressure reaches necessarily at 150 ℃, be cooled to 80 ℃, obtain the unneutralized product of catalyzer.In this product, add 8 times to the キヨ one ワ one De 600S as catalyst adsorbent of catalyst weight, depress in nitrogen little adding, 80 ℃ of adsorption treatment of carrying out 1 hour.Then,, use on No. 2 filter paper precoating to be furnished with the suction filter Filtration Adsorption agent of ラジオライト #900, obtain 6 moles of affixtures of glycerine oxyethane (hereinafter referred to as POE (6) glycerine) the solution after handling.It is encased in the four-hole boiling flask, is warming up to 105 ℃ and stirs with 300rpm, with respect to 1 mole of POE (6) glycerine be 3.6 moles ratio with the acetic anhydride of about 1 hour time dropping specified amount, make its reaction.Drip the back 110 ℃ of following maturations 2 hours, again 120 ℃ of following maturations 1 hour.After the maturation, under reduced pressure boil off unreacted acetic anhydride and by product acetic acid, distill again, obtain POE (6) triacetin.

Synthesis example 2: the synthesis example of softening agent

In the 1 liter of flask that has stirrer, thermometer, dropping funnel, pack into the PEG300 (Northeast chemistry (strain) produce, molecular-weight average be 300) of 200g, at 110 ℃ down with the acetic anhydride of 1 hour dropping 204g, and then 120 ℃ of following maturations 2 hours.Reaction finishes back distillation under 100 ℃/2.5kPa and removes unreacted acetic anhydride and by product acetic acid, and then distills under 100 ℃/1.3kPa, obtains target softening agent (average total addition mole number of polyoxyethylene glycol diacetate esters, oxyethane is 6.4).

Embodiment 1～5, comparative example 1～6

Will be by 100 weight parts as the polylactic resin of Biodegradable resin (Mitsui Chemicals (strain) the LACEA H-280, SP value 21.5, the Tm that produce are that 140 ℃, Tg are 60 ℃), 25 weight parts Biodegradable resin composition (Tg is 11 ℃) as the nucleus agent formation of kind shown in POE (6) triacetin of softening agent and the table 2 and amount, use 180 ℃ mixing 10 minutes of Laboplastmill, use 180 ℃ pressing make-up machine to make the test film of thickness as 0.5mm.

Utilize following method to measure the transparency of gained test film.In addition, the gained test film is placed on leaves standstill 3 hours or 36 hours in the baking oven that is controlled at 60 ℃, heat-treat.Utilize following method to carry out the evaluation of flexibility, temperature sensibility, thermotolerance, the transparency, anti-exudative and degree of crystallinity through heat treated test film.These the results are shown in table 2.

＜the transparency 〉

The integrating sphere type light penetration determinator (haze meter) that uses the JIS-K7105 regulation to before the thermal treatment and the haze value that carries out test film of the test film after the thermal treatment measure.The more little expression transparency of numerical value is good more.

＜flexibility, temperature sensibility, thermotolerance 〉

According to JIS-K7198, use Measurement of Dynamic Viscoelasticity device (アイテイ one measures control and produces DVA-200), the test film of measuring after the thermal treatment is that 50Hz, heat-up rate are the temperature dependency of the storage modulus in-20 ℃～80 ℃ temperature province under 2 ℃/minute the condition (E ') in frequency, and at the storage modulus of 0 ℃, 25 ℃ and 60 ℃ (E ').

＜anti-exudative

Test film after the thermal treatment (long 100mm * wide 100mm * thick 0.5mm) was placed for 1 week in 40 ℃ thermostatic chamber, and whether visual inspection has plasticizer exudation on its surface.

＜degree of crystallinity 〉

For the test film after the thermal treatment, use wide-angle x-ray diffraction determinator (RINT2500VPC, the light source that utilize motor of science to produce are 120mA as CuK α, tube voltage as 40kV, tube current), analyze the noncrystal and crystalline peak area of 2 θ=5～50 ° scope, try to achieve degree of crystallinity.

Table 2

	The nucleus agent		Haze value (%) before the transparency thermal treatment	60 ℃ of treatment times (H)	Flexibility, temperature sensibility, thermotolerance storage modulus E ' are (Pa)			Haze value (%) after the transparency thermal treatment	Anti-exudative condition of surface (have or not and ooze out)	Degree of crystallinity (%)
	The nucleus agent											Kind	Addition (weight part)	0℃	25℃	60℃
Embodiment 1	A	1			5.6	3	1.57E±09					Kind	Addition (weight part)	0℃	25℃	60℃	3.16E±08	4.44E±07	9.5	Do not have	11.5
			36	1.56E±09		3	1.57E±09	3.16E±08	4.46E±07	14.0	Do not have	13.6					3.16E±08	4.44E±07	9.5	Do not have	11.5
			36	1.56E±09		Embodiment 2	B	3.16E±08	4.46E±07	14.0	Do not have	13.6	1	7.9	3	1.38E±09	2.59E±08	3.41E±07	20.0	Do not have	14.9
36	1.38E±09	2.60E±08	3.45E±07	18.7	Do not have			14.7							3	1.38E±09	2.59E±08	3.41E±07	20.0	Do not have	14.9
36	1.38E±09	2.60E±08	3.45E±07	18.7	Do not have			14.7	Embodiment 3	C	1	13.2			3	1.52E±09	3.08E±08	4.68E±07	17.7	Do not have	11.0
36	1.52E±09	3.09E±08	4.69E±07	19.0	Do not have	12.0									3	1.52E±09	3.08E±08	4.68E±07	17.7	Do not have	11.0
36	1.52E±09	3.09E±08	4.69E±07	19.0	Do not have	12.0	Embodiment 4	D					1	6.5	3	1.50E±09	3.20E±08	5.12E±07	11.8	Do not have	12.3
36	1.50E±09	3.12E±08	5.51E±07	11.9	Do not have	13.2									3	1.50E±09	3.20E±08	5.12E±07	11.8	Do not have	12.3
36	1.50E±09	3.12E±08	5.51E±07	11.9	Do not have	13.2			Embodiment 5	E	1	7.1			3	1.81E±09	3.59E±08	5.13E±07	18.5	Do not have	12.2
36	1.81E±09	3.60E±08	5.13E±07	18.9	Do not have	14.4									3	1.81E±09	3.59E±08	5.13E±07	18.5	Do not have	12.2
36	1.81E±09	3.60E±08	5.13E±07	18.9	Do not have	14.4	Comparative example 1	Do not have and add					5.8	3	2.26E±09	3.11E±08	1.94E±06	6.5	Do not have	0.0
36	1.52E±09	2.75E±08	4.48E±07	53.5	Do not have	14.0								3	2.26E±09	3.11E±08	1.94E±06	6.5	Do not have	0.0
36	1.52E±09	2.75E±08	4.48E±07	53.5	Do not have	14.0				Comparative example 2	F	1		16.7	3	1.60E±09	3.30E±08	5.11E±07	29.0	Do not have	12.3
36	1.59E±09	3.30E±08	5.15E±07	26.7	Do not have	13.4									3	1.60E±09	3.30E±08	5.11E±07	29.0	Do not have	12.3
36	1.59E±09	3.30E±08	5.15E±07	26.7	Do not have	13.4	Comparative example 3	G	1				6.5		3	1.58E±09	2.98E±08	4.14E±07	27.5	Do not have	12.5
36	1.56E±09	3.60E±08	5.13E±07	25.0	Do not have	14.6									3	1.58E±09	2.98E±08	4.14E±07	27.5	Do not have	12.5
36	1.56E±09	3.60E±08	5.13E±07	25.0	Do not have	14.6				Comparative example 4	H	1		19.9	3	1.62E±09	3.04E±08	4.82E±07	32.7	Do not have	8.5
36	1.61E±09	3.05E±08	4.82E±07	48.3	Do not have	15.0									3	1.62E±09	3.04E±08	4.82E±07	32.7	Do not have	8.5
36	1.61E±09	3.05E±08	4.82E±07	48.3	Do not have	15.0	Comparative example 5	I	0.5				5.8		3	2.24E±09	2.66E±08	2.72E±06	7.6	Do not have	0.0
36	1.43E±09	3.77E±08	2.10E±07	48.4	Do not have	16.8									3	2.24E±09	2.66E±08	2.72E±06	7.6	Do not have	0.0
36	1.43E±09	3.77E±08	2.10E±07	48.4	Do not have	16.8				Comparative example 6	J	1		35.2	3	1.94E±09	2.60E±08	2.66E±07	43.9	Do not have	6.2
36	1.54E±09	3.92E±08	2.23E±07	53.9	Do not have	16.8									3	1.94E±09	2.60E±08	2.66E±07	43.9	Do not have	6.2

Embodiment 6～8, comparative example 7～8

Will be by 100 weight parts as the polylactic resin of Biodegradable resin (melange, the SP value of the LACEA H-280/LACEA H-400=75/25 (weight ratio) that Mitsui Chemicals (strain) is produced is 21.5, Tm be that 165 ℃, Tg are 62 ℃), 25 weight parts Biodegradable resin composition (Tg is 14 ℃) as the nucleus agent formation of kind shown in POE (6) triacetin of softening agent and the table 3 and amount, use 180 ℃ mixing 10 minutes of Labo plastmill, use 180 ℃ pressing make-up machine to make the test film of thickness as 0.5mm.

Utilize the transparency of the method mensuration gained test film identical with embodiment 1.In addition, the gained test film is placed on leaves standstill 4 minutes or 36 hours in the baking oven that is controlled at 60 ℃, heat-treat.Utilize the method identical to carry out the evaluation of flexibility, temperature sensibility, thermotolerance, the transparency, anti-exudative and degree of crystallinity through heat treated test film with embodiment 1.These the results are shown in table 3.

Table 3

	The nucleus agent		Haze value (%) before the transparency thermal treatment	60 ℃ of treatment times	Flexibility, temperature sensibility, thermotolerance storage modulus E ' are (Pa)			Haze value (%) after the transparency thermal treatment	Anti-exudative condition of surface (have or not and ooze out)	Degree of crystallinity (%)
	The nucleus agent											Kind	Addition (weight part)	0℃	25℃	60℃
Embodiment 6	A	1			4.6	4 minutes	1.49E±09					Kind	Addition (weight part)	0℃	25℃	60℃	3.44E±08	5.23E±07	5.9	Do not have	16.7
			36 hours	1.47E±09		4 minutes	1.49E±09	3.44E±08	5.24E±07	8.5	Do not have	16.6					3.44E±08	5.23E±07	5.9	Do not have	16.7
			36 hours	1.47E±09		Embodiment 7	B	3.44E±08	5.24E±07	8.5	Do not have	16.6	1	5.7	4 minutes	1.45E±09	3.34E±08	5.03E±07	10.7	Do not have	15.9
36 hours	1.45E±09	3.35E±08	5.05E±07	13.6	Do not have			16.4							4 minutes	1.45E±09	3.34E±08	5.03E±07	10.7	Do not have	15.9
36 hours	1.45E±09	3.35E±08	5.05E±07	13.6	Do not have			16.4	Embodiment 8	E	1	6.7			4 minutes	1.50E±09	3.44E±08	5.24E±07	12.4	Do not have	15.4
36 hours	1.49E±09	3.44E±08	5.24E±07	12.6	Do not have	15.6									4 minutes	1.50E±09	3.44E±08	5.24E±07	12.4	Do not have	15.4
36 hours	1.49E±09	3.44E±08	5.24E±07	12.6	Do not have	15.6	Comparative example 7	Do not have and add					4.7	4 minutes	2.28E±09	3.11E±08	1.94E±06	5.0	Do not have	0.0
36 hours	1.28E±09	3.76E±08	7.52E±07	47.6	Do not have	19.3								4 minutes	2.28E±09	3.11E±08	1.94E±06	5.0	Do not have	0.0
36 hours	1.28E±09	3.76E±08	7.52E±07	47.6	Do not have	19.3				Comparative example 8	F	1		16.0	4 minutes	1.46E±09	3.87E±08	5.57E±07	26.5	Do not have	17.9
36 hours	1.47E±09	3.88E±08	5.57E±07	26.1	Do not have	15.5									4 minutes	1.46E±09	3.87E±08	5.57E±07	26.5	Do not have	17.9

Embodiment 9～11, comparative example 9～10

Will be by 100 weight parts as the polylactic resin of Biodegradable resin (Mitsui Chemicals (strain) the LACEA H-400, SP value 21.5, the Tm that produce are that 166 ℃, Tg are 62 ℃), 15 weight parts Biodegradable resin composition (Tg is 33 ℃) as the nucleus agent formation of kind shown in POE (6) triacetin of softening agent and the table 4 and amount, use 180 ℃ mixing 10 minutes of Labo plastmill, use 180 ℃ pressing make-up machine to make the test film of thickness as 0.5mm.

Utilize the transparency of the method mensuration gained test film identical with embodiment 1.In addition, the gained test film is placed on leaves standstill 1 minute or 60 hours in the baking oven that is controlled at 60 ℃, heat-treat.Utilize the method identical to carry out the evaluation of flexibility, temperature sensibility, thermotolerance, the transparency, anti-exudative and degree of crystallinity through heat treated test film with embodiment 1.These the results are shown in table 4.

Table 4

	The nucleus agent		Haze value (%) before the transparency thermal treatment	60 ℃ of treatment times	Flexibility, temperature sensibility, thermotolerance storage modulus E ' are (Pa)			Haze value (%) after the transparency thermal treatment	Anti-exudative condition of surface (have or not and ooze out)	Degree of crystallinity (%)
	The nucleus agent											Kind	Addition (weight part)	0℃	25℃	60℃
Embodiment 9	A	1			2.4	1 minute	2.2E±09					Kind	Addition (weight part)	0℃	25℃	60℃	1.3E±09	2.5E±08	2.6	Do not have	23.4
			60 hours	1.9E±09		1 minute	2.2E±09	1.3E±09	3.9E±08	6.7	Do not have	28.6					1.3E±09	2.5E±08	2.6	Do not have	23.4
			60 hours	1.9E±09		Embodiment 10	B	1.3E±09	3.9E±08	6.7	Do not have	28.6	1	3.4	1 minute	2.3E±09	1.4E±09	1.8E±08	3.8	Do not have	23.3
60 hours	1.9E±09	1.3E±09	4.0E±08	10	Do not have			29.4							1 minute	2.3E±09	1.4E±09	1.8E±08	3.8	Do not have	23.3
60 hours	1.9E±09	1.3E±09	4.0E±08	10	Do not have			29.4	Embodiment 11	E	1	2.6			1 minute	2.2E±09	1.2E±09	2.0E±08	4.2	Do not have	24.1
60 hours	1.9E±09	1.3E±09	3.7E±08	4.6	Do not have	27.6									1 minute	2.2E±09	1.2E±09	2.0E±08	4.2	Do not have	24.1
60 hours	1.9E±09	1.3E±09	3.7E±08	4.6	Do not have	27.6	Comparative example 9	Do not have and add					3.4	1 minute	2.5E±09	1.6E±09	5.8E±06	4.3	Do not have	2.7
60 hours	2.1E±09	1.4E±09	4.5E±08	60	Do not have	33.4								1 minute	2.5E±09	1.6E±09	5.8E±06	4.3	Do not have	2.7
60 hours	2.1E±09	1.4E±09	4.5E±08	60	Do not have	33.4				Comparative example 10	G	1		7.1	1 minute	2.4E±09	1.6E±09	9.5E±06	7.1	Do not have	3.2
60 hours	2.1E±09	1.4E±09	4.2E±08	25	Do not have	31.3									1 minute	2.4E±09	1.6E±09	9.5E±06	7.1	Do not have	3.2

Embodiment 12～15, comparative example 11～13

Will be by polylactic resin (the LACEA H-400 that Mitsui Chemicals (strain) produce of 100 weight parts as Biodegradable polyester resin, the SP value is 21.5, Tm is 166 ℃, Tg is 62 ℃), 15 weight parts as synthetic polyoxyethylene glycol in synthesis example 2 (6.4) diacetate esters of softening agent (hereinafter referred to as softening agent a), the Biodegradable resin composition that the nucleus agent of kind and amount shown in two carboxylates (hereinafter referred to as softening agent c) of two carboxylates of succsinic acid and triethylene glycol monomethyl ether (hereinafter referred to as softening agent b) or hexanodioic acid and diethylene glycol monomethyl ether and the table 5 constitutes, use 180 ℃ mixing 10 minutes of Labo plastmill, use 180 ℃ pressing make-up machine to make the test film of thickness as 0.5mm.

Utilize the transparency of the method mensuration gained test film identical with embodiment 1.In addition, the gained test film is placed on to leave standstill in the baking oven that is controlled at 70 ℃ 1 minute or be placed on left standstill in the baking oven that is controlled at 60 ℃ 60 hours, heat-treat.Utilize the method identical to carry out the evaluation of flexibility, temperature sensibility, thermotolerance, the transparency, anti-exudative and degree of crystallinity through heat treated test film with embodiment 1.These the results are shown in table 5.

Table 5

	Softening agent		The nucleus agent		The Tg of composition (℃)	Haze value (%) before the transparency thermal treatment	Heating temperature * treatment time	Flexibility, temperature sensibility, thermotolerance storage modulus E ' are (Pa)			Haze value (%) after the transparency thermal treatment	Anti-exudative condition of surface (have or not and ooze out)	Degree of crystallinity (%)
	Softening agent		The nucleus agent											Kind	Addition (weight part)	Kind	Addition (weight part)	0℃	25℃	60℃
	Embodiment 12	a	15	C				0.5	34	2.3				Kind	Addition (weight part)	Kind	Addition (weight part)	0℃	25℃	60℃	70 ℃ * 1 minute	2.1E±09	1.3E±09	2.8E±08	2.8	Do not have	21.5
60 ℃ * 60 hours					1.8E±09	1.3E±09	4.2E±08				7.9	Do not have	31.0								70 ℃ * 1 minute	2.1E±09	1.3E±09	2.8E±08	2.8	Do not have	21.5
60 ℃ * 60 hours					1.8E±09	1.3E±09	4.2E±08				7.9	Do not have	31.0	Embodiment 13	a	15	K	0.5	34	3.9	70 ℃ * 1 minute	2.1E±09	1.3E±09	2.8E±08	4.6	Do not have	22.1
60 ℃ * 60 hours	1.8E±10	1.3E±09	4.2E±08	9.7	Do not have	30.5															70 ℃ * 1 minute	2.1E±09	1.3E±09	2.8E±08	4.6	Do not have	22.1
60 ℃ * 60 hours	1.8E±10	1.3E±09	4.2E±08	9.7	Do not have	30.5	Embodiment 14	b	15	C	0.5	35	1.6								70 ℃ * 1 minute	2.1E±09	1.1E±09	3.0E±08	4.3	Do not have	24.3
60 ℃ * 60 hours	2.1E±09	1.1E±09	3.1E±08	6.8	Do not have	29.1															70 ℃ * 1 minute	2.1E±09	1.1E±09	3.0E±08	4.3	Do not have	24.3
60 ℃ * 60 hours	2.1E±09	1.1E±09	3.1E±08	6.8	Do not have	29.1								Embodiment 15	c	15	C	0.5	34	2.4	70 ℃ * 1 minute	2.1E±09	1.1E±09	3.0E±08	6.5	Do not have	30.4
60 ℃ * 60 hours	2.1E±09	1.1E±09	3.1E±08	7.6	Do not have	31.3															70 ℃ * 1 minute	2.1E±09	1.1E±09	3.0E±08	6.5	Do not have	30.4
60 ℃ * 60 hours	2.1E±09	1.1E±09	3.1E±08	7.6	Do not have	31.3	Comparative example 11	a	15	Do not have and add		34	2.9								70 ℃ * 1 minute	2.0E±09	1.2E±09	1.3E±07	8.2	Do not have	10.0
60 ℃ * 60 hours	1.9E±09	1.3E±09	4.8E±08	28	Do not have	36.8															70 ℃ * 1 minute	2.0E±09	1.2E±09	1.3E±07	8.2	Do not have	10.0
60 ℃ * 60 hours	1.9E±09	1.3E±09	4.8E±08	28	Do not have	36.8								Comparative example 12	b	15	Do not have and add		35	1.8	70 ℃ * 1 minute	2.5E±09	1.5E±09	4.3E±07	7.8	Do not have	16.1
60 ℃ * 60 hours	1.9E±09	1.3E±09	4.1E±08	30	Do not have	30.6															70 ℃ * 1 minute	2.5E±09	1.5E±09	4.3E±07	7.8	Do not have	16.1
60 ℃ * 60 hours	1.9E±09	1.3E±09	4.1E±08	30	Do not have	30.6	Comparative example 13	c	15	Do not have and add		34	1.8								70 ℃ * 1 minute	2.5E±09	1.5E±09	4.3E±07	8.2	Do not have	15.1
60 ℃ * 60 hours	1.9E±09	1.3E±09	4.1E±08	57.1	Do not have	31.2															70 ℃ * 1 minute	2.5E±09	1.5E±09	4.3E±07	8.2	Do not have	15.1

Embodiment 16～20, comparative example 14～18

Will be by polylactic resin (the LACEA H-400 that Mitsui Chemicals (strain) produce of 100 weight parts as Biodegradable polyester resin; the SP value is 21.5; Tm is 166 ℃; Tg is 62 ℃); 15 weight parts are as synthetic POE in synthesis example 1 (6) triacetin (hereinafter referred to as softening agent d) of softening agent; softening agent a; (ridge, field chemical industry (strain) is produced for softening agent b or Tributyl O-acetylcitrate; hereinafter referred to as softening agent e) and table 6 shown in the Biodegradable resin composition that constitutes of the nucleus agent of kind and amount; use 180 ℃ mixing 10 minutes of Labo plastmill, use 180 ℃ pressing make-up machine to make the test film of thickness as 0.5mm.

The manual injection molding machine that uses emerging Sellbic to produce, once more with test film 190 ℃ of following fusions, then be injected in 80 ℃ the mould and keep finishing until crystallization, make long for 60mm, thick be 10mm, widely be the test film of 2mm.With this moment until time that crystallization finishes as the hold-time.

Utilize the release property of test film from mould after following standard evaluation crystallization finishes, degree of crystallinity uses the method identical with embodiment 1 to try to achieve.And according to JIS K7110, beam type (Izod) shock-testing machine that uses the smart machine of Japan to produce is estimated the shock-resistance of gained test film.These the results are shown in table 6.

The judgement criteria of＜release property 〉

Zero: be very easy to break away from

Zero～△: break away from easily

△: break away from some difficulty

△～*: it is difficult to break away from

*: do not break away from

Table 6

	Softening agent		The nucleus agent		The Tg of composition (℃)	Melt temperature (℃)	Die temperature (℃)	Hold-time (second)	Release property	Degree of crystallinity (%)	Shock-resistance ^* (kJ/m ²)
	Softening agent		The nucleus agent									Kind	Addition (weight part)	Kind	Addition (weight part)
	Embodiment 16	d	15	C								Kind	Addition (weight part)	Kind	Addition (weight part)	0.5	33	190	80	15	○	30.8	NB
Embodiment 17	Embodiment 16	d	15	C	d	15	K	0.5	33	190	80	15	○	32.0	NB	0.5	33	190	80	15	○	30.8	NB
Embodiment 17	Embodiment 18	a	15	C	d	15	K	0.5	33	190	80	15	○	32.0	NB	0.5	34	190	80	15	○	31.3	NB
Embodiment 19	Embodiment 18	a	15	C	a	15	K	0.5	34	190	80	15	○	33.4	NB	0.5	34	190	80	15	○	31.3	NB
Embodiment 19	Embodiment 20	b	15	C	a	15	K	0.5	34	190	80	15	○	33.4	NB	0.5	35	190	80	15	○	30.0	NB
Comparative example 14	Embodiment 20	b	15	C	d	15	Do not have and add		33	190	80	120	△～×	31.3	NB	0.5	35	190	80	15	○	30.0	NB
Comparative example 14	Comparative example 15	d	15	I	d	15	Do not have and add		33	190	80	120	△～×	31.3	NB	0.5	33	190	80	120	△～×	32.2	NB
Comparative example 16	Comparative example 15	d	15	I	Do not have and add		L	0.5	62	190	80	600	○	28.6	2.2	0.5	33	190	80	120	△～×	32.2	NB
Comparative example 16	Comparative example 17	a	15	L	Do not have and add		L	0.5	62	190	80	600	○	28.6	2.2	0.5	34	190	80	30	○	31.6	NB
Comparative example 18	Comparative example 17	a	15	L	e	1	L	0.5	43	190	80	300	○	29.9	2.2	0.5	34	190	80	30	○	31.6	NB

^*NB: do not destroy

Embodiment 21, comparative example 19

Will be by polylactic resin (the LACEA H-400 that Mitsui Chemicals (strain) produce of 100 weight parts as Biodegradable polyester resin, the SP value is 21.5, Tm is 166 ℃, Tg is 62 ℃), 10 weight parts are as the softening agent d of softening agent, the nucleus agent of kind shown in the table 7 and amount and 0.5 weight part hydrolysis inhibitor (カ Le ボジライト LA-1, clear weaving of day (strain) production) Biodegradable resin composition (Tg is 42 ℃) that constitutes, use 180 ℃ mixing 10 minutes of Labo plastmill, use 180 ℃ pressing make-up machine to make the test film of thickness as 0.5mm.

The manual injection molding machine that uses emerging Sellbic to produce, once more with test film 200 ℃ of following fusions, then be injected in 80 ℃ the mould and keep finishing until crystallization, make long for 60mm, thick be 10mm, widely be the test film of 2mm.With this moment until time that crystallization finishes as the hold-time.

Test film after similarly estimating crystallization and finish with embodiment 16～20 is from release property, degree of crystallinity and the shock-resistance of mould.These the results are shown in table 7.

Table 7

	The nucleus agent		Melt temperature (℃)	Die temperature (℃)	Hold-time (second)	Release property	Degree of crystallinity (%)	Shock-resistance ^* (kJ/m ²)
	The nucleus agent								Kind	Addition (weight part)
	Embodiment 21	C							Kind	Addition (weight part)	0.5	200	80	15	○	34.1	NB
Comparative example 19	Embodiment 21	C	Do not have and add		200	80	120	△～×	33.0	NB	0.5	200	80	15	○	34.1	NB

^*NB: do not destroy

Claims

1, a kind of manufacture method of Biodegradable resin composition, this method comprises following operation: (1) carries out the blended operation with Biodegradable resin, softening agent and nucleus agent under the temperature more than or equal to the fusing point Tm of described Biodegradable resin, wherein said nucleus agent is to have the fatty compounds that is selected from least a group in ester group, hydroxyl and the amide group more than 2 in molecule; (2) operation of heat-treating under more than or equal to the glass transition temperature Tg of Biodegradable resin composition and temperature less than Tm.

2, the manufacture method of Biodegradable resin composition as claimed in claim 1, wherein with respect to the Biodegradable resin of 100 weight parts, the content of softening agent is 7～70 weight parts, the content of nucleus agent is 0.1～5 weight part.

3, the manufacture method of Biodegradable resin composition as claimed in claim 1 or 2, wherein the fusing point of nucleus agent is in the fusing point Tm+50 from 70 ℃ to Biodegradable resin ℃ scope.

4, as the manufacture method of each described Biodegradable resin composition in the claim 1～3, wherein the nucleus agent is to be selected from least a in ethylenebis 12-hydroxyl stearylamide and the two 12-hydroxyl stearylamides of hexa-methylene.

5, as the manufacture method of each described Biodegradable resin composition in the claim 1～4, wherein the temperature of operation (2) is 50～85 ℃.

6, a kind of Biodegradable resin composition, it contains Biodegradable resin, softening agent and nucleus agent, described nucleus agent is to have the fatty compounds that is selected from least a group in ester group, hydroxyl and the amide group more than 2 in molecule, and described composition satisfies following (i), (ii) and the condition (iii)

Be 25 ℃ (ii) in temperature, the storage modulus E ' when frequency is 50Hz is 1 * 10 ⁸～2 * 10 ⁹Pa;

Be 60 ℃ (iii) in temperature, the storage modulus E ' when frequency is 50Hz is 1 * 10 ⁷～1 * 10 ⁹Pa.

7, Biodegradable resin composition as claimed in claim 6, wherein with respect to the Biodegradable resin of 100 weight parts, the content of softening agent is 7～70 weight parts, the content of nucleus agent is 0.1～5 weight part.

8, as claim 6 or 7 described Biodegradable resin compositions, wherein the fusing point of nucleus agent is in the fusing point Tm+50 from 70 ℃ to Biodegradable resin ℃ scope.

9, as each described Biodegradable resin composition in the claim 6～8, wherein the nucleus agent is to make the cold crystallization temperature Tcc of the Biodegradable resin composition of following definitions smaller or equal to 65 ℃ compound;

Cold crystallization temperature Tcc is defined as follows:

With respect to the L-lactic acid purity of 100 weight parts more than or equal to 95% polylactic resin, mix under more than or equal to the temperature of the fusing point Tm of Biodegradable resin (wherein as 15 weight part polyoxyethylene of softening agent, the average addition mole number of oxyethane is 6) triacetin and 1 weight part nucleus agent, after its cooling, obtain Biodegradable resin composition with non-crystalline state (degree of crystallinity of promptly using wide-angle x-ray diffraction to measure is less than and equals 1% condition); The cold crystallization peak temperature of this Biodegradable resin composition of using differential scanning type calorimeter to measure begin with 8 ℃/minute intensification condition from room temperature under is defined as cold crystallization temperature Tcc.

10, as each described Biodegradable resin composition in the claim 6～9, wherein the nucleus agent is to be selected from least a in the two 12-hydroxyl stearylamides of ethylenebis 12-hydroxyl stearylamide and hexa-methylene.

11, as each described Biodegradable resin composition in the claim 6～10, wherein Biodegradable resin is a polylactic resin.